Last updated: August 21, 2025
January in Castletown, Isle of Man presents a chilly yet intriguing maritime climate. With maximum temperatures reaching 13°C (56°F) and an average of 8°C (46°F), residents and visitors can expect cool conditions, occasionally dipping to a brisk 3°C (38°F) at night. Rainfall is significant, totaling 81 mm (3.2 in) over 14 days, contributing to a damp atmosphere with humidity levels soaring to 89%. This balance of moisture and moderate temperatures shapes a unique winter experience, perfect for exploring the town's rich history amidst the invigorating coastal breezes.
In Castletown, Isle of Man, January's temperatures mark the heart of winter, with minimums around 3°C (38°F) and averages of 8°C (46°F), peaking at a relatively mild 13°C (56°F). This month typically offers a gentle reprieve from the chill, transitioning smoothly from the colder December, where nighttime lows remain just above freezing. As January gives way to February, the temperatures dip slightly, reflecting minimums falling to 1°C (34°F) and averages shifting to 7°C (45°F). The trend continues into March, where the thermometers can even plunge to a brisk -1°C (30°F). Altogether, this progression underscores a gradual warming trend as the region moves towards spring, providing a clear contrast to the earlier deep chill of winter. The variations in temperature not only highlight the unique charm of Castletown's climate but also create a picturesque backdrop for its winter landscapes.
January in Castletown, Isle of Man, marks the onset of the year with 81 mm of precipitation spread over 14 days. This moderately wet start reflects a seasonal pattern where the new year often greets residents with a mix of rain and overcast skies. As the months progress, February sees a noticeable increase in precipitation, rising to 106 mm, followed by a slight dip in March before the weather stabilizes in the spring months. The data reveals a trend of increasing rainfall as the year advances, peaking in the late autumn months with November and December recording 143 mm and 144 mm respectively. This suggests a shift toward wetter conditions as the seasons change, making November and December particularly notable for their increased rainfall and frequency of precipitation days. Overall, January sets the stage for a year characterized by distinct weather patterns, emphasizing the Isle of Man’s climate variability.
In January, Castletown, Isle of Man, experiences a notably high humidity level of 89%, setting the tone for a damp winter. This humidity slightly decreases to 88% in February, but remains relatively high until the arrival of spring. As temperatures begin to rise, humidity levels gradually drop, reaching 84% by April and hitting a seasonal low of 78% in July. The summer months maintain a comfortable range around 78-81%, offering a brief respite from the earlier chill. However, as autumn approaches, humidity levels rise again, peaking at 91% in November, before stabilizing once more at 89% in December. This cyclical trend underscores the Isle of Man's maritime climate, characterized by persistent moisture throughout the year, particularly during the colder months.
In January, Castletown experiences a low UV Index of 1, indicating minimal sun exposure risk with a burn time of approximately 45 minutes. This trend of low UV levels continues into February, maintaining the same index and burn time. As spring approaches in March, the UV Index rises to 3, marking a shift to moderate exposure, with a shorter burn time of 30 minutes. This upward trend continues into April when the index reaches 5, signaling a move into the moderate category. The real leap occurs in May and June, with UV levels soaring to 7 and 8, respectively, reflecting a period of high to very high exposure and a significantly reduced burn time of just 15 minutes. The UV Index starts to decline in August, returning to 7, before dropping to 5 in September. As the year wraps up, the UV levels taper back down to low in November and December, mirroring January's readings. For a comprehensive look at the UV trends throughout the year, visit Castletown UV Index.
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As January greets Castletown, it brings a mere 90 hours of sunshine, setting the stage for a gradual increase in brightness as the months unfold. By February, this number nearly doubles to 161 hours, signaling the first signs of spring. The sun continues its ascent, with March and April showcasing 233 and 341 hours respectively, prompting a vibrant awakening in nature. May reaches its peak in this progression with an impressive 418 hours, yet summer's luminescence starts to stabilize with the same amount in July. Following this, the sun begins to retreat gently through late summer and autumn, with September delivering 314 hours and October 244 hours. As the year wanes, the light diminishes further, leaving November and December with 131 and 104 hours of sunshine, respectively. This beautiful cycle not only highlights the variance in daylight but also encapsulates the shifting seasons in this picturesque coastal town.
In Castletown, Isle of Man, January brings a modest 28% chance of sunny weather, slightly higher than February’s 26%. This suggests that while the winter months generally see limited sunshine, January stands out as one of the more promising times for a glimpse of sun. As the year progresses, the likelihood of sunshine increases significantly—April offers a sunny disposition at 52%, followed closely by May at 40%. This trend highlights the expected transition from chilly, overcast winter days to brighter, longer springtime opportunities. Overall, while January may not be the sunniest month by a long shot, it does hint at the brighter days just around the corner.
In Castletown, Isle of Man, January brings approximately 8 hours of daylight, setting the stage for a gradual lengthening of days as winter transitions into spring. By February, the daylight increases to 9 hours, hinting at the seasonal shift ahead. As March arrives, the days continue to grow, offering 11 hours of sunlight, while April enjoys a significant leap to 14 hours. May heralds the full embrace of spring, showcasing 16 hours of daylight, followed by the peak in June with an impressive 17 hours. However, as summer wanes, July sees a slight decrease to 16 hours, and August follows suit with 14 hours. The descent into autumn starts in September with 12 hours, leading into the shorter daylight months of October at 10 hours and November and December, which drop to 8 and 7 hours, respectively. This pattern reflects the rhythmic dance of seasons, highlighting the Isle of Man's unique climatic charm.
In January, Castletown on the Isle of Man experiences an average wind speed of 8.5 m/s (19 mph), setting a brisk tone for the winter month. This initial gustiness serves as a precursor to a more blustery February, where winds pick up to 10.5 m/s (24 mph), offering a sharp contrast that invigorates the landscape. Interestingly, as the seasons transition into spring, the wind calms to match January's pace by March, only to taper down significantly as warmer months approach. April marks a notable drop to 5.8 m/s (13 mph), and this trend continues into the summer, with July witnessing the softest breezes at just 4.3 m/s (10 mph). As autumn arrives, wind speeds surge again, seemingly preparing the island for the winter months ahead, with November and December both echoing the brisk start of the year at 9.3 m/s (21 mph) and 9.1 m/s (20 mph), respectively. This cyclical pattern underscores the dynamic relationship between the seasons and the winds that sweep across Castletown.
Weather in Castletown varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Castletown, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February experience somewhat similar weather patterns, though February tends to be slightly cooler and wetter. In January, the average temperature ranges from a chilly 3°C (38°F) at its minimum to a mild 13°C (56°F) at its peak, while February sees temperatures dipping to a low of 1°C (34°F) and a high of 12°C (54°F). Precipitation is more frequent in February, with 106 mm (4.2 in) falling over 18 days compared to January's 81 mm (3.2 in) and 14 days of rain. Overall, both months are characterized by high humidity, hovering around 89% in January and 88% in February. For a more detailed outlook, check Castletown weather in February.
January and March weather display some noticeable differences, particularly in temperature and precipitation patterns. In January, the average temperature hovers around 8°C (46°F), with minimum and maximum temperatures ranging from 3°C (38°F) to 13°C (56°F). The month experiences 81 mm (3.2 in) of precipitation over 14 days, accompanied by high humidity levels at 89%. In contrast, March sees slightly cooler temperatures, with an average of 7°C (45°F) and minimum temperatures dipping to -1°C (30°F). Precipitation increases to 87 mm (3.4 in) across 18 days, while humidity remains relatively stable at 86%. For those interested in specifics about March weather, further details can be found at Castletown weather in March.
January and April exhibit similar temperature ranges, with both months experiencing minimums around 3°C (38°F) and maximums peaking at 13°C (56°F). However, January is characterized by much higher precipitation levels, totaling 81 mm (3.2 in) over 14 days, compared to April, which sees only 36 mm (1.4 in) across 8 days. Additionally, humidity decreases slightly from January's 89% to April's 84%, indicating a marginally drier atmosphere as spring approaches. For more detailed information about April weather specifically, you can visit Castletown weather in April.
January and May exhibit notable differences in weather conditions. In January, temperatures range from a chilly minimum of 3°C (38°F) to a maximum of 13°C (56°F), with an average of 8°C (46°F). The month is also characterized by higher precipitation of 81 mm (3.2 in) over approximately 14 days, along with a high humidity level at 89%. In contrast, May offers milder conditions, with temperatures starting at a minimum of 5°C (42°F) and reaching a maximum of 16°C (60°F), and an average temperature of 10°C (51°F). The month experiences significantly reduced precipitation at 44 mm (1.7 in) across just 9 days, and lower humidity at 79%. For a more detailed look at the weather in May, check out Castletown weather in May.
In January, the weather is typically chilly, with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 13°C (56°F). This month experiences considerable rainfall, averaging 81 mm (3.2 in) over about 14 days, coupled with high humidity at 89%. In contrast, June brings a milder climate, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (64°F). Precipitation decreases to 70 mm (2.8 in) over 11 days, and humidity also drops to 81%. For more details on the pleasant June weather, you can visit Castletown weather in June.
In January, temperatures in Castletown range from a chilly 3°C (38°F) at their lowest to a mild 13°C (56°F) at their peak, with an average of about 8°C (46°F). The month sees a significant amount of precipitation, totaling 81 mm (3.2 in) across approximately 14 days, coupled with high humidity at 89%. In contrast, July offers a much warmer climate, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 19°C (67°F), averaging around 14°C (58°F). This summer month experiences slightly less precipitation at 70 mm (2.8 in) over about 12 days and lower humidity at 78%. For a detailed look at the weather patterns, check out Castletown weather in July.
January and August present stark contrasts in weather patterns. In January, temperatures range from a chilly minimum of 3°C (38°F) to a max of 13°C (56°F), with an average of 8°C (46°F). The month is characterized by high humidity at 89% and significant precipitation, totaling 81 mm (3.2 in) over 14 days. In contrast, August enjoys milder temperatures, with minimums around 12°C (54°F) and maximums reaching 18°C (65°F), averaging 15°C (59°F). Although August sees slightly more rainfall at 94 mm (3.7 in) over 15 days, the humidity is lower at 79%. For a detailed look at weather conditions specific to August, you can visit Castletown weather in August.
January and September present distinct weather patterns, highlighting the transition from winter to autumn. In January, temperatures range from a chilly 3°C (38°F) to a moderate 13°C (56°F), with an average of 8°C (46°F) and a notable high humidity of 89%. This month also sees approximately 81 mm (3.2 in) of precipitation over 14 days. In contrast, September experiences milder temperatures with a minimum of 10°C (51°F), an average of 14°C (58°F), and a maximum of 19°C (67°F). While precipitation slightly increases to 91 mm (3.6 in) over the same number of days, the humidity is slightly lower at 85%. For more detailed insights, you can check Castletown weather in September.
In January, temperatures in Castletown range from a chilly 3°C (38°F) to a mild 13°C (56°F), with an average of 8°C (46°F). This month experiences considerable precipitation, totaling 81 mm (3.2 in) over approximately 14 days, coupled with high humidity at 89%. In contrast, October sees slightly warmer temperatures, with minimums of 7°C (45°F) and maximums reaching 17°C (63°F), resulting in an average temperature of 13°C (55°F). However, October is wetter, with precipitation totaling 142 mm (5.6 in) across 18 days and a slight increase in humidity at 90%. For more details, you can check Castletown weather in October.
In comparing the weather between January and November, we see a gradual transition in temperatures and precipitation patterns. January typically experiences a slightly lower temperature range, with average highs of 13°C (56°F) compared to November's 14°C (58°F). Additionally, while both months are characterized by high humidity, November is marginally more humid at 91% compared to January's 89%. Precipitation is more pronounced in November, with 143 mm (5.6 in) falling over 20 days, whereas January sees 81 mm (3.2 in) over just 14 days. For a more detailed look at the weather in November, you can visit Castletown weather in November.
In comparing the weather of January and December, we see that both months have similar temperature ranges, with January averaging 8°C (46°F) and December slightly higher at 9°C (48°F). However, January experiences less precipitation, totaling 81 mm (3.2 in) over 14 days, compared to December's 144 mm (5.7 in) across 22 days. Despite these differences, both months maintain a high humidity level of 89%. For a detailed look at December weather, you can check out Castletown weather in December.
As January settles in Castletown, the weather takes on a distinct character, marked by cooler temperatures and increased moisture compared to other months. With a maximum of 13°C and a minimum dipping to 3°C, the average feels noticeably brisk, often accompanied by high humidity at 89%. Rainy days are frequent, totaling around 14, contributing to a precipitation level of 81 mm for the month. This sets January apart from the milder, dryer months that follow, making it a time for cozy indoors while enjoying the picturesque winter scenery. For a deeper look into how this month fits into the broader spectrum of weather patterns, explore Castletown Climate.